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A comment on Electromagnetism is a property of spacetime itself, study finds. Parent comment

Re:Electromagnetism is a property of spacetime itself, study... by al2o3cr on Saturday July 24, 2021 @02:43PM (#27943443)
For one, it's going to produce a metric where all the diagonal elements are positive (or zero) - different from the -+++ or +--- signature of "normal" spacetime.

The paper's calculation reminds me of Kaluza-Klein theory, which uses a similar construction as part of extending the metric from four dimensions to five:

https://en.wikipedia.org/wiki/Kaluza–Klein_theory

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Re:Electromagnetism is a property of spacetime itself, study... by ozankabak on Saturday July 24, 2021 @02:59PM (#27943556)
I was thinking about the signature issue as well. In flat space (i.e. Minkowski metric), this would imply a constant four-potential with an imaginary 0'th component, which I can not make sense of.
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